EP0067935A2 - Dispositif de sondage d'une surface d'une éprouette chaude - Google Patents

Dispositif de sondage d'une surface d'une éprouette chaude Download PDF

Info

Publication number
EP0067935A2
EP0067935A2 EP82103084A EP82103084A EP0067935A2 EP 0067935 A2 EP0067935 A2 EP 0067935A2 EP 82103084 A EP82103084 A EP 82103084A EP 82103084 A EP82103084 A EP 82103084A EP 0067935 A2 EP0067935 A2 EP 0067935A2
Authority
EP
European Patent Office
Prior art keywords
rotating body
coolant
test
cooling channels
test probe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82103084A
Other languages
German (de)
English (en)
Other versions
EP0067935B1 (fr
EP0067935A3 (en
Inventor
Hans Luz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Original Assignee
Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG filed Critical Institut Dr Friedrich Foerster Pruefgeraetebau GmbH and Co KG
Publication of EP0067935A2 publication Critical patent/EP0067935A2/fr
Publication of EP0067935A3 publication Critical patent/EP0067935A3/de
Application granted granted Critical
Publication of EP0067935B1 publication Critical patent/EP0067935B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G12—INSTRUMENT DETAILS
    • G12B—CONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B15/00—Cooling
    • G12B15/04—Cooling by currents of fluid, e.g. air, in open cycle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
    • G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
    • G01N27/9013—Arrangements for scanning

Definitions

  • the invention relates to a device for scanning a surface of a hot test part by at least one error test probe rotating in a plane parallel to said surface, with a rotating body in which said error test probe is installed, with drive means for driving the rotary body and with electrical connecting means for connecting the Test probe to an electronic test and evaluation circuit.
  • the fault test probe is preferably an eddy current test probe, but in principle any other probe of non-destructive testing technology can be used.
  • the object of the invention is to create a device of the type defined at the outset which allows the testing of hot semi-finished products, ie semi-finished products at temperatures of up to 1000 ° C. It is in this.
  • the solution according to the invention consists in a device which is characterized according to claim 1.
  • the solution according to the invention enables the known devices to be used in a simple manner for test parts which still have a very high temperature resulting from casting. Conventional cooling of the rotating body from its underside would have increased the distance between the probes and the test part to an unacceptable extent, while the solution according to the invention does not increase this distance at all.
  • a particular advantage of the solution according to the invention is that no sealing means are necessary for the connection between the fixed supply arrangement of the coolant with the bore of the hollow shaft, since the coolant has the flow rate required for sufficient cooling by itself and without due to the centrifugal force acting on it sets an excess pressure of the coolant caused from the outside. This makes it extremely easy for the coolant to flow out of the fixed feed arrangement into the bore of the hollow shaft.
  • Rotating body 1 shows a vertical section along the lines I - I, in FIG. 2 the top view of the lower part 2 of the rotating body 1, which will be described in more detail below.
  • Rotating body 1 is connected via a hollow shaft 3, a V-belt pulley 4 and a V-belt 5 to a drive, not shown, by which it can be driven at very high rotational speeds.
  • Hollow shaft 3 rests in two ball bearings 6, which are held by bearing rings 7.
  • a rotary transformer set 8 is arranged between the two ball bearings 6, the stator part 9 of which is embedded in recesses in the two bearing rings 7 and the rotor part 10 is mounted on the hollow shaft 3.
  • the bearing rings 7 are encompassed by a flange 11 which, supported by a guide device (not shown), holds the rotating body 1 at the intended distance above the surface of the test part 13 which is moved approximately in the direction of arrow 12 relative to the rotating body.
  • a feed device 14 for the coolant used is composed of a pipe 15, a collar 16 attached to it and a hose line 17 connected to the pipe, which is connected to a coolant source.
  • the tube is attached to the flange 11 via the collar 16 and a collar 18, which has openings for the passage of the V-belt 5.
  • the mouth side of the tube 15 can be inserted into the bore of the hollow shaft 3 without contact and without a seal, or it can only be brought up to the entrance of the bore.
  • the rotating body 1 is disc-shaped and consists of the aforementioned lower part 2 and an upper part 21, both made of bronze or brass.
  • Lower part 2 and upper part 21 are held together by screws 22 and sealed against one another by a sealing ring 23.
  • six cooling channels 24 leading outward in a star shape are embedded, three of which run out into a chamber 25. The cooling effect can be increased if you artificially extend the path of the coolant by not making the channels straight, but z. B. snake or zigzag, or by providing one or more spirally leading channels.
  • outlet bores 26 are provided in the upper part 21, which open into the open at the periphery of the upper part.
  • the cross section of these bores 26 should be smaller than the cross section of the cooling channels 24 and can be further reduced if necessary by means of an adjusting screw 27.
  • the chambers 25, which have an opening on their underside, each serve to receive an eddy current test probe 28, which runs all around from there Coolant can flow around.
  • the opening of the bottom on the underside of the chambers 25 is closed by a thin cover plate 29 made of austenitic steel. On the one hand, this offers adequate protection for the probe 28, on the other hand it allows the alternating magnetic fields required for the generation of the eddy currents to pass through without any noteworthy weakening.
  • the connecting wires 30 of the probes 28 are connected to the rotor part 10 of the rotary transformer set 8, the stator part 9 of which is connected to the electronic devices, which further process and evaluate the signals of the probes 28.
  • An annular collecting trough 34 attached to the flange 11 receives the coolant flowing out of the bores 26 and leads it away in a suitable manner.
  • the coolant can be supplied in portions, the amount of coolant present in the hollow shaft acting as a buffer.
  • the supply of the coolant is controlled by the temperature sensor 32 so that a preselected temperature of the rotating body 1 is not exceeded.

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electrochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Thermal Sciences (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
EP19820103084 1981-05-29 1982-04-10 Dispositif de sondage d'une surface d'une éprouette chaude Expired EP0067935B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3121331 1981-05-29
DE19813121331 DE3121331C2 (de) 1981-05-29 1981-05-29 Vorrichtung zum Abtasten einer Oberfläche eines heißen Prüfteiles

Publications (3)

Publication Number Publication Date
EP0067935A2 true EP0067935A2 (fr) 1982-12-29
EP0067935A3 EP0067935A3 (en) 1985-01-16
EP0067935B1 EP0067935B1 (fr) 1986-12-30

Family

ID=6133464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820103084 Expired EP0067935B1 (fr) 1981-05-29 1982-04-10 Dispositif de sondage d'une surface d'une éprouette chaude

Country Status (2)

Country Link
EP (1) EP0067935B1 (fr)
DE (1) DE3121331C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540246A1 (fr) * 1983-01-28 1984-08-03 Solmer Dispositif pour detecter des criques sur les brames d'acier sortant d'une coulee continue
EP0179012A1 (fr) * 1984-10-15 1986-04-23 United Technologies Corporation Manipulateur pour pièces dans un environnement chaud
EP0208652A1 (fr) * 1985-06-24 1987-01-14 C.A. Weidmüller GmbH & Co. Capteur pour les procédés de soudage et de coupe
EP0241861A2 (fr) * 1986-04-16 1987-10-21 Törnbloms Kvalitetskontroll Ab Dispositif pour contrôler et/ou mesurer des objets chauds

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1199159B (it) * 1984-07-13 1988-12-30 Centro Speriment Metallurg Sonda per il controllo dei difetti superficiali di corpi metallici ad alta temperatura

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694735A (en) * 1970-07-27 1972-09-26 United States Steel Corp Water-cooled eddy-current transducer for testing product while at high temperature
US4024470A (en) * 1974-05-20 1977-05-17 Republic Steel Corporation Eddy current detector for hot test pieces having coolant fluid and purge features
DE1648737B2 (de) * 1967-08-21 1978-04-20 Vereinigte Edelstahlwerke Ag (Vew), Wien Vorrichtung zur kontinuierlichen zerstörungsfreien Prüfung von ferromagnetischem Stabmaterial mit rundem Querschnitt auf Oberflächenfehler und/oder knapp unter der Oberfläche liegende Fehler
GB2028510A (en) * 1978-08-21 1980-03-05 Defence Sercretary Of State Fo Apparatus for the detection of defects in engineering materials
US4379261A (en) * 1980-09-10 1983-04-05 Lakin Kenneth M Rotating magnetic field device for detecting cracks in metal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE628378A (fr) * 1962-02-23

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1648737B2 (de) * 1967-08-21 1978-04-20 Vereinigte Edelstahlwerke Ag (Vew), Wien Vorrichtung zur kontinuierlichen zerstörungsfreien Prüfung von ferromagnetischem Stabmaterial mit rundem Querschnitt auf Oberflächenfehler und/oder knapp unter der Oberfläche liegende Fehler
US3694735A (en) * 1970-07-27 1972-09-26 United States Steel Corp Water-cooled eddy-current transducer for testing product while at high temperature
US4024470A (en) * 1974-05-20 1977-05-17 Republic Steel Corporation Eddy current detector for hot test pieces having coolant fluid and purge features
GB2028510A (en) * 1978-08-21 1980-03-05 Defence Sercretary Of State Fo Apparatus for the detection of defects in engineering materials
US4379261A (en) * 1980-09-10 1983-04-05 Lakin Kenneth M Rotating magnetic field device for detecting cracks in metal

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540246A1 (fr) * 1983-01-28 1984-08-03 Solmer Dispositif pour detecter des criques sur les brames d'acier sortant d'une coulee continue
EP0115735A2 (fr) * 1983-01-28 1984-08-15 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Dispositif pour détecter des criques sur les brames d'acier sortant d'une coulée continue
EP0115735A3 (en) * 1983-01-28 1986-03-26 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Device for detecting cracks in sted slabs made by a continuous casting process
US4584746A (en) * 1983-01-28 1986-04-29 Societe Lorraine Et Meridionale De Laminage Continu - Solmer Device for detecting cracks in steel slabs leaving continuous casting
EP0179012A1 (fr) * 1984-10-15 1986-04-23 United Technologies Corporation Manipulateur pour pièces dans un environnement chaud
EP0208652A1 (fr) * 1985-06-24 1987-01-14 C.A. Weidmüller GmbH & Co. Capteur pour les procédés de soudage et de coupe
CH667028A5 (de) * 1985-06-24 1988-09-15 Elektroniktechnologie Get Vorrichtung bei schweiss- und schneidvorgaengen.
EP0241861A2 (fr) * 1986-04-16 1987-10-21 Törnbloms Kvalitetskontroll Ab Dispositif pour contrôler et/ou mesurer des objets chauds
EP0241861A3 (fr) * 1986-04-16 1989-03-15 Törnbloms Kvalitetskontroll Ab Dispositif pour contrôler et/ou mesurer des objets chauds

Also Published As

Publication number Publication date
EP0067935B1 (fr) 1986-12-30
DE3121331C2 (de) 1986-03-06
EP0067935A3 (en) 1985-01-16
DE3121331A1 (de) 1982-12-16

Similar Documents

Publication Publication Date Title
DE3533219C1 (de) Rohrbuendelwaermetauscher
DE2656398C3 (de) Heiz- und Kuhlkammer für Chromatographiesäulen
DE2707145C2 (de) Zentrifuge
DE1053819B (de) Vorrichtung zur kontinuierlichen Entnahme von heissen, staubhaltigen Gasen fuer Gasanalysatoren
EP0067935B1 (fr) Dispositif de sondage d'une surface d'une éprouette chaude
DE2655640C3 (de) Vorrichtung zur Bestimmung des Badspiegels in einer Stranggießkokille
DE1261345B (de) Ultrazentrifuge mit kontinuierlichem Fluessigkeitsumlauf
DE834870C (de) Wirbelstrom-Bremsen, -Dynamometer und -Kupplungen
DE3113120C1 (de) Vorrichtung zur Inspektion von Gussstraengen in einer Stranggiessanlage
DE2652433B2 (de) Vorrichtung zur Bestimmung des Badspiegels in einer Stranggießkokille
DE823126C (de) Zentrifugalseparator zum Reinigen von Bier
DE1807349A1 (de) In Leitung liegende elektrische Messzelle
DE1553080B1 (de) Vorrichtung zum elektromagnetischen Pumpen fluessiger Metalle
DE3535103A1 (de) Vorrichtung zur messung der fuer eine synchronisier-einrichtung in schaltgetrieben, insbesondere von kraftfahrzeugen, relevanten groessen
DE2937021A1 (de) Verbesserungen bei der feststellung von undichtigkeiten von kuehlfluessigkeit in hochofenduesen
DE4125228C2 (de) Vorrichtung zur in-line-Probenahme und zur optischen Messung von Materialeigenschaften eines strömenden Fluids
DE1806585C (de) Vorrichtung zur Temperierung von Pro bengefäßen, z B Reagenzrohrchen
DE2855511A1 (de) Wirbelstrom-pruefvorrichtung
DE2130102A1 (de) Verfahren und Vorrichtung zur magnetischen Untersuchung von Metallband
DE2712328A1 (de) Zentrifuge
DE722659C (de) Viskosimeter
DE942685C (de) Kuehlvorrichtung an Metallstrangpressen
DE2020926A1 (de) Kuehlanordnung an Drahtziehmaschinen
DE1773233A1 (de) Leckstromfreie Dichtung
CH654099A5 (de) Verfahren zur aushaertung einer endlosen bahn aus haertbarem material und vorrichtung zur durchfuehrung des verfahrens.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

RHK1 Main classification (correction)

Ipc: G01N 27/90

AK Designated contracting states

Designated state(s): FR GB IT SE

17P Request for examination filed

Effective date: 19850116

17Q First examination report despatched

Effective date: 19860311

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): FR GB IT SE

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19881229

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19890410

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19890411

GBPC Gb: european patent ceased through non-payment of renewal fee
EUG Se: european patent has lapsed

Ref document number: 82103084.8

Effective date: 19900412